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Undefined control sequence.
l.7 \abx@aux@refcontext
                       {nty/global//global/global}
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

LaTeX Error: Missing \begin{document}.
No \begin{document} command was found. Make sure you have included \begin{document} in your preamble, and that your main document is set correctly.
See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...

l.7 \abx@aux@refcontext{n
                         ty/global//global/global}
You're in trouble here.  Try typing  <return>  to proceed.
If that doesn't work, type  X <return>  to quit.

! Undefined control sequence.
l.8 \AC@reset@newl@bel